Which approach method does NOT require a procedure turn except under certain conditions?

The standard approach method typically follows predefined routes and procedures for landing, including approaches like ILS or VOR, which can be executed without needing a procedure turn unless specified due to unique circumstances such as obstacles or air traffic control directives. This means that in most situations, the standard approach can be completed directly without the need to perform a procedure turn.

In contrast, the hold in lieu of procedure, teardrop course reversal, and similar methods deliberately incorporate turns to align the aircraft with the final approach course. These maneuvers are specifically designed to manage air traffic flow and ensure safe spacing between aircraft, often making a procedure turn necessary to correctly position for the landing phase.